Expansible circular table



'1. SEILER.

EXPANSIBLE CIRCULAR TABLE.

APPLICATION FILED MAR, 29, I920.

Eatented July 19, 1921.,

2 SHEETSSHEET I.

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J. SEILER.

EXPANSIBLE CIRCULAR TABLE.

APPLICATION FILED MAR. 29,1920.

Patented July 19, 1921,

2 SHEETS-SHEET 2. I

AITyS JOSEF SEILER, 01E LIEGNI'I'Z, GERMANY.

EXPANSIBLE CIRCULAR TABLE.

Sipecification of Letters Patent.

Patented July 19, Iltlfdl.

Application filed March 29, 1920. SeriaI No. 369,783,

T all whom 2 1 may concern:

Be it known that I, Josue SEILER, a citizen oi the Republic oi? Germany,residing at Liegnitz, Germany, have invented a new and usefulImprovement in Expansible Circular Tables, for which I have filedapplications in Germany, dated September .2, 1915, and in Great Britain,dated February 13, 1920, or which. the following is a specification.

This invention has reference to improvements in expansible circulartables, and it consists broadly in a round table provided with expansionpieces or plates adapted to it around its periphery and which normallylie under the table top in approximately the form of a folded ian withina rim which has a screw-thread or like ongagement with a member of theframe and can be lowered and raised by rotating it, the arrangementbeing such that when the rim has been lowered all the plates can besimultaneously swung outward to form the enlarging ring and when the rimis again rotated to raise it the said ring is raised into the plane ofthe table top. lVhen the rim is again screwed downward the expansionplates are tilted obliquely and return simultaneously into their"tan-like position, whereupon they are concealed by again screwing upthe rim. The invention also comprises certain novel constructional.details hereinafter described and specifically pointed out in theappended claims.

An embodiment of the inventaion is illustrated in the accompanyingdrawings, in which Figure 1 is a vertical section through the middle ofthe closed table;

Fig. 2 is a plan view of the table with the stationary top removed toshow the arrangcment of the expansion plates below same;

Fig. 3 shows in section a portion of the enlarged table top; 7

Fig. 4: is a plan view oi a portion of the expanded table without thecentral stationary part;

Figs. 5, 6, and 7 show the means for raising theenlarging plates invarious posi tions; and

Figs. 8 and 9 show means for locking the enlarging pieces or plates.

Referring to the drawings, the stationary part of the table consists oithe table top a 5.5which is connected by its downward extension Q with amember (Z having four arms arranged in the form of a cross. lhe rim Z)is adapted to be screwed upward and clownward by means of four spiralgrooves m iormed in its inner face, in which grooves the ends 0 of thefixed cross (Z engage. The enlarging plates 7" are hingedly connected atone of their radial edges to carriers r bymeans of hinges s, and thesecarriers can swing and SlIClB up and down on rods 0.

Ihe carriers '0 rest upon a rotatable flat ring 0 provided with pins 9which extend through slots a in the carriers, and the said ring ismounted on rollers e, to enableit to be easily rotated, and is guided atits inner edge on rollers p mounted on the rods 0, the arrangement beingsuch that the carriers 2 and the ring 0 move together when the ring isrotated. To prevent the ring being rotated too far, stops 2' againstwhich the carriers o abut are provided on the ring 6; and to limit theupward movement of the tree radial sides of the enlarging plates r,small plates a adapted to engage under the table top a are mounted onthe inner circu lar edges of the plates 9'. Under the plates a, lie theplate tilters Z, which are hingedly connected to the carriers 1/, sothat they are movable upward, and are provided with an easily movedpendulum-like trip la, which slides over a stationary ring 7 that isrigidly connected to the cross (Z and over the ring e (see F 6) when thecarriers are being swung inward and outward. lVhen the rim 6 with thecarriers o swung out is screwed upward, the trip 70 leaves the ring 7"and hangs down free. in the downward movement the trip contacts with thering and tilts the plate lifter Z upward. Thereby the plates 7 aretilted up, through the plates a, so that they automatically take uptheir tanlike position in being swung inward. During this inwardswinging the trip 70 is again turned into itshorizontal position.

At the point where the carriers o when swung outward lie over the rim 6,hooks m are mounted which normally lie in their inoperativeposition(Fig. 9). hen the rim Y) is raised, projections g on these hooks contactwith the table top a, and thereby the front end of the hooks isdepressed and the rear end, which is also formed with a hook, is raised,the latter hook becoming engaged in a seat in the table top a and theformer being engaged under a plate it mounted on the rim Z) andprojecting outward a little beyond its periphery, the said rim and thetable top a being thus coupled together.

The swinging of the plates 9 outward and inward is facilitated by theprovision of a handgrip t which is mounted slidably in one of thecarriers '0, while a folding handle 'w enables the rim Z) to be readilyrotated.

The expanding orenlarging of the table is effected as follows :Thehandle w is turned outward and by means of it the rim is rotated to theleft until it is arrested by the stops Then by pulling out one of thecarriers v (by means of the grip t in the case of a large table) theenlarging plates 7 are swung outward. These plates at once take up ahorizontal position, the plate tilters Z not being disturbed in theswinging outward, and form a closed, horizontal stationary ring. By nowrotating the rim 6 to the right, with the help of the handle .20 thesaid ring is raised into the plane of the stationary table top a, and atthe same timethe said rim and table top are drawn together and locked toeach other by means of the hooks m. The enlarging ring andthe table topa now form a single flat surface, and the plates or being engaged 7under the table top a, the plates 9 constituting the said ring can notbecome tilted.

In order to restore the BXPELDSlOIl members to their position under thetable top a, the

rim 6 is again rotated to the left, thus disengaging the hooks m fromthe plates 72. and the table top. 011 further rotation of the rim to theleft the plate lifters Z are tilted up when the vtrips 70 contact withthe fixed ring f and the several plates 1 are thus, through the platesa, tilted so that t ey take up automatically their fan-like position inswinging inward. Finally, the rim 6 is ro tated to the right to raise itinto contact'with the table top a and the handle w is folded inward.

lVhat I claim is:

1. In an expansible circular table, the combination'of a central supportor pedestal, a stationary circular table top supported thereon, rigidarms extending from said support in the form of a cross, a rotatable rimhaving spiral grooves formed in its inner periphery in which grooves theends of the said arms are slidably engaged, a plurality of enlargingplates which are normally re t ained within the rim under the stationarytable top and are adapted to be moved outward' to form an annulus aroundthe periphcry of the said stationary table top, a carrier -arm for eachenlarging plate, a rotatable ring on which all the said carrier-armsbear and to which each of the said arms is coupled, and means forautomatically tilting the said enlarging plates, when they are beingmoved inward, to cause them to take up antomatically under thestationary table top positions in which they overlap each other like theleaves of a folded fan.

2. In an expansible circular table, the combination with a centralsupporting frame, a stationary circular table top supported thereon, arotatable rim having a spiral-grooveand-tongue connection with the saidframe to adapt it to be raised and lowered thereon, and a plurality ofenlarging plates which are normally retained within the rim under thestationary table top and are adapted to be moved outward to form anannulus around the periphery of the said table top, of a carrier-arm foreach enlarging plate hingedly connected to the said plate at one of itsradial edges and pivot-ally and slidably carried at its inner end on avertical pin mount ed on the central supporting frame, a rotatable ringon which all the said carrier-arms bear, a pin-and-slot connectionbetween the said ring and eachrcarrier-arm, and a trip device forautomatically tilting each enlarging plate as it is being swung inward,sub stantially as set. forth.-

3. In an expansible circular table, the combination of a central supportor pedestal, a stationary circular table top supported thereon, arotatable rim having a spiral-grooveand-tongue connection, with the saidcentral support to adapt it to he raised and lowered thereon, aplurality of enlarging plates which are normally retained within the rimunder the stationary table top and are adapted to form an annulus aroundthe periphery of the said table top, arms pivotally carried on thecentral support and hingedly connected to the said enlarging plates, arotatable ring on which all the said arms bear and to which each arm iscoupled by apin-and-slot connection, hook devices mounted onthe saidarms and adapted to be operated by the rim contacting therewith when itis rotated to raise it after the said arms have been swung outward, andtrip devices for automatically tilting the enlarging plates as they arebeing swung inward, all substantially as set forth.

JOSE]? SEILEh- V Witnesses:

Ron. Z. FRIOKEX, MAN Harrison.

